package cn.edu.sdjzu.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "Filter 0",urlPatterns = {"/*"})
public class EncodingFilter implements Filter {
    public void destroy(){}

    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
        System.out.println("Filter 0 - encoding begins");
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html:charset=UTF-8");
        chain.doFilter(req,resp);
        System.out.println("Filter 0 - encoding ends");
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }
}
